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Sept. 29, 1925. 1,555,155

A. F. POOLE conPu'rING MACHINE Filed March 25 1924 4 Sheets-Sheet l sept. 29, 19225.`

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A. F. POOLE COMPUTING MACHINE Filed March 25, 1924 4 Sheets-Sheet 2 kil kvk

JMA QYM, H15 ATTDRNEY sept. 29, 1925.

A. F. POOLE COMPUTING MACHINE Filed latch 25 1924 4 Sheets-Sheet 3 ATTRNEY nu, HIS

Sept. 29, 1925.

A. F. POOLE COMPUTING MACHINE Patented Sept. 29, 1925.

UNITED STATES PATENT OFFICE,

ARTHUR F. OOLE, F PELHAH MANOR, NEW YORK, ASSIGNOR T0 REMINGTON AC- COUNTINGMACHINE CORPOBATIN, OF NEW YORK, N. Y., A CORPORATIUN 0F NEW YORK.

CQMIUTING MACHINE.

Application led Iarch 25, 1924. Serial Ho. 701,853.

To all whom it may concern.'

Be it known that I, ARTHUR F. POOLE, citizen ofthe United States, and resident of Pelham Manor, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Computing Machines, of which the followin is a specification.

y invention relates to computmg 'machines of that type in which the register wheels are actuated one at a time, and it has for its principal object to provide certain improvements in the means whereby the register or totalizer is set preparatory for actuation first in one denomination and then in another. This means is operated by the travel of a decimal-selecting carriage.

' M invention is applicable or adaptable in who e or in part to many adding machines of the class referred to, but in the present instance it is shown applied as an improvement to the Remington accounting machine, which is well known commercially and which is described 'for example inthe atent to John C. Wahl, No. 1,270,471 date June 25, 1918. In that machine the totalizer includes a series of .so-called carrying wheels normally geared together in a. train by means ot Geneva pinions mounted on kswinging arms,4 and the actuator of the machine includes a master dog for lifting these arms.

one at a time at the several keystrokes in order to unlock and break the train at the particular denominationbeing operated by each particular key stroke. This operation ci the Geneva mechanism is in the Wahl machine actuated by the power of the key and puts a heavier load on the key than any other single part of the Wahl mechanism. @ne ot the objects of my invention is to lighten the load on the key by controlling these Geneva-carrying arms by the travel of the carriage. By' my invention the action of these arms is also rendered more positive. l also provide in addition to the Geneva pinions operating functionally as in the nlVahl `machine an extra locking device or detent `which positively locks each of the wheels to the right oi the one being operated on. 1 also provide means for locking the master dog and, therefore the whole compnting mechanism at certain points such as punctuation points.

To the above and other ends my invention consists in certain eatures of construction and combinations and arran ements of parts, all of which will be fnl y set forth herein and particularly pointed out in the claims.

One 'form of the invention is illustrated in the accompanying drawings, in Which- Figure 1 is an elevation of the mechanism of my totalizer with the right-hand sideplate sectioned away, the figure also showing some of the associated parts of the Wahl mechanism.

Figure 2 is somewhat in the nature et a front elevation of the totalizer with the cover-plate removed but the lower part of the ligure shows rather a development of ythe train of gearing from the carrying Wheels to the dials. In this ligure some parts are omitted for clearness of illustration.

` Figure 3 is a plan view of the totalizer with the upper part thereof sectioned away and some of the mechanism removed, the right-hand part of the figure being in section about on the line 3 3 of Figure 1.

Figure 4 shows the upper rear part oi the denomination selectinrr mechanism of the totalizer partly in sect1on but also a certain stationary rack vand part of the truck. ln this view the observer is looking toward the rear at an upward inclination, lengthwise oi a certain shaft.

Figures 5 to 12, inclusive, are views or a series of cams and their followers, one cam and one follower for each denomination of the machine.

Figure 13 is a similar view oi a cam and follower which lock the machine at punctuation points.

Fi ire 1l is a perspective view of a certain ail.

Figure 15 is a perspective view o a certain lever.

Figure 16 is a face view of another lever employed in the machine.

I have illustrated but little ol the Remain@- ton Accounting Machine, this being a wel known machine and bein Well described in the Wahl patent above re erred to..

It may be said, however, that the machine includes a Remington typewriter to *which is attached the Wahl computing mechanism, the stationary framework of W ich include@ a certain casting having integral therewith lil@ Y a bracket l at the middle of the machine.

with the keys that during the first part of the key stroke the master dog is rocked counter-clockwise in Figure 1| and while it occupies its operated position the master wheel 18 is turned to the extent of a number of its teeth equal to the numerical value of the operated key. After the master wheel ceases to turn and at the end of the down stroke of the key, the master dog 17 is restored to its normal position, after which the typewriter carriage takes a step to the left. Connected to said carriage'is a truck 20 mounted on certain wheels not here shown and carrying a rack 21 into the teeth of which an arm of the dog 17 engages to hold the truck in position while the master wheel is turning. This truck carries the vertical totalizers and I have shown my totalizer mounted on it.

The totalizer frame includes right and left side-plates 22, a cover plate 23and eer-V tain frame bars, rods and shafts connecting the twok side-plates and some of them supporting parts of the mechanism.4 Such of these bars, rods and shafts as arestationary may be secured to the side-plates in any suitable manner; for exam le, in thesame manner as in the Wahl totalizer, wheresome of them are dovetailed into the side-plates and others arev securedv theretov by screws. Some of these cross piec which are not connected with the movable arts are lettered 24 in the drawings, and ot ers will beindividually referred t1o in the following description. The sidelates 22 have at their rear parts the same ove-tailed construction as the ,ordinary Wahl totalizer whereby they are mounted on the dovetailed part of the truck 20. The totalizer is adjustable along the truck in the same way as the Wahl totalizer and is secured in adjusted position by means similar to the Wahl, said means including a rock shaft 25 having a handle 26 projecting from the top of the totalizcr and having two hooks 27 which are caught over the truck, one of said hooks being provided with the usual tooth 28 engaging in the notched bar 30 on the forward face of the truck. This device is controlled by a spring 31.

The mechanism of the totalizer includes carrying wheels 32 journaled on a fixed shaft 33 in exactly the same position and the wheels being exactly the same as in the 'Wahl totalizer. In the present instance there are eight of these wheels, arranged for computing whole numbers up to tens of millions, with a blank space between the hundreds and thousands, and another betheir respective shafts.

tween the hundreds of thousands and mil lions. The dial wheels 34 are identical in construction with those of the Wahl mechanism and they Aare journaled on a rod 35 in the lower forward part of the machine. In order to avoid interference with some of my mechanism their position is different from the Wahl mechanism, their pinions 36 being geared'respectively to the several carrying wheels 32 by two sets of idlers 37 and 38 journaled on rods 40 and 41. In Figure 2 these trains of gearing are shown developed downward for the sake of clearness of illustration.

The transfer mechanism includes two sets of Geneva pinions, namely, a rear set 42 and a forward set 43, these being identical in construction with the corresponding parts of the Wahl machine, and the axes of the two sets occupying the same position in the totalizer as in the Wahl totalizer, these pinions being arranged in two sets for the same reason in both machines, namely, in order to stagger them to avoid interference between them. Each Geneva pinion has on its righthand side a star wheel which eooperatesl with certain transfer teeth 44, three of which are made on each of the wheels -The middle section of each Geneva pinion is a scalloped wheel which co-operates in the well-known way with the cylindrical section 45 of each wheel 32, each such cylindrical section having a concave or cutout 46 registering radially with each of the teeth 44. The left-hand section of each Geneva inion is a spur pinion meshing with the-teet of the next wheel 32 to the left thereof but capable of being raised-out of engagement in order to break the train of gearin -In short, the dials 34, the wheels 32 an Geneva pinions 42 and 43 may be said to be simply Wahl mechanism.

Each of the pinions 42 is mounted on a rocking piece 47, each of said rocking pieces having a hub 48 pivoted on a shaft 50; and

each of the pinions 43 is journaled on a pivoted piece 51, the hub 52 of which is pivoted on a transverse shaft 53. The hubs 48 and 52 are suitably elongated `so as to space the pivoted pieces properly along The rear pivoted pieces 47 areacted on by springs 54 and the forward pivoted pieces 51 by springs 55, saidsprings being connected to cross rods 56 and tending to throw their respective Geneva pinions down into engagement with the carrying wheels 32. A transverse frame bar 57 has therein a series of adjustable stop screws 58 and each of the pivoted pieces 47 and 51 is arranged to be arrested by one of these stop screws which can be nicely adjusted to give exactly the right engagement between the Geneva pinion and the carrying wheel. As will appearhereinafter these pivoted pieces are positively controlled in both directions and in case other provision is made for the necessary accuracy these springs 54 'and 55, and perhaps the stop screws 58 may be omitted. Two cross bars 60 and 61 have teeth in position to engage respectively the notchesin the Geneva pinions 42 and 43 when the latter are thrown out of engagement with their carrying wheels.

Some of the rocking pieces 47 and 51 have cut-outs, as indicated at G2. to avoid interference with other parts` such for example as the toothed bar 61.

In order to control the rocking pieces 47 and 51 from the carriage a straight rack 63 is provided on the stationary framework, this in the present instance being shown secured to the bracket 15 by means including screws 64. The front toothed edge of this rack bar is bent upward and at a forward inclination to mesh with a gear in the totalizer, said gear being fast on a forwardly and downwardly extending shaft 6G which shaft is journaled at its rear end in a frame bar 67 and at its forward end in the cross bar 61. At its rear end said shaft carries a spiral pinion 68 which meshes with another spiral pinion 70, the latter rigid with a sleeve 71 which Surrounds a transverse shaft 72 on which it is journaled; or the pinion may be merely rigid with a transverse shaft journaled atits ends in the frame plates 22. Thefconstruction is such that when the carriage is traveling toward the left and therefore rotating the gear 65 counter-clockwise in Figure 4, the pinion would be rotated toward the rear of the machine, thatis to sa clockwise in Figure 1 and at the same s aft speed. 1n other words, the shaft 71 makes a complete turn for each complete turn of the shaft 66. At its left-hand end said shaft 71 has rigid thereon a spur gear 73 meshing with a spur gear 74 fast on'a cam shaft 75, the latter shown with one lat side for co-operation with a series of cam disks to be described. The gears 73 and 74 are of equal size so that in the leftward travel of the carriage the shaft 75 makes one complete rotation counter-clockwise in Figure 1, for each r0- tation of the shaft 66.

The shaft 75 has fast thereon a series of nine cams, all except one being double, that is to say, each of them is composed of a right-hand plate or disk 76 and a left-hand disk 77, the two being secured together by rivets 78. Each of the rocker pieces 47 and 51 is controlled'by one of these cams having a forward follower tooth 80 for co-operation with the right-hand disk 77 and a rear follower tooth 81 off-set to the left from tooth 80 in order to co-operate with the cam disk 77. In each pair the disk 76 and 77 are complementary to each other so that between them they maintain complete positive control of the rocker piece. The several cams are shown in detail in Figures 5 to 12, inclusive, Figure 12 showing the extreme left-hand cam which has the disk 76 but the space which would otherwise be occupied by the disk 77 is in this instance occupied by the gear Wheel 74 so that this last piece 47 is controlled only in one direction by the cam and in the other direction by a spring 54.

At the bottom of Figure 2 I have designated the several letter space positions of the totalizer by the numerals 1 to 1G inclusive, for convenience of reference and description, the space of lowest order being numbered 1. It will be observed that spaces 4 and 8 are blank orv punctuation spaces. At the upper part of this ligure the several pairs of cams which are respectively in control at the several letter space positions of the carriage are similarly numbered, except the numbers 4 and 8, vthat is to'say, the pair of cam disks 76 and 77 which in the upper part of the ligure are numbered 1 are operative to release the register train of lowest order which at the bottom of the same figure is similarly numbered. As will hereinafter appear the third double cam from the right which in this ligure is marked P controls a punctuation lock for spaces 4 and 8. Just belowthe shaft 53 each of the rocking pieces 47 and 51 has been numbered to indicate the letter space position in which that piece is rocked by the cams. This system of numbering has been thought convenient because the disposition of the cams and rocking pieces across the machine does not at first sight appear to correspond to tlie disposition of the registering trains and the numbering helps to trace the mechanism. For exam le, the punctuation cams P occupy the t ird position from the richt and the double cam 3 occupies the fourth position from the right. Notwithstanding this, cam 3 is controlling in the third letter' space position and the cams P in the fourth and eighth positions. In the Wahl totalizer and also in my totalizer, each carrying wheel 32 just to the right of a punctuation space is made double by riveting two carryinfg wheels together so that there is an i le carrying wheel occu ying the unctuation space. In the case oi) the thir dial and its: connections, the rocker 47 co-operates with this idle wheel and not with the rlimaryl carrying wheel 32 and the same t ing is true in the hundreds of thousands or seventhregistering train. With this explanation it will be seen that the different Geneva rockers cooperate properly with their, respective denominations.

In Figure 1 and Figures 5 to 13, inclusive, the parts are shown in the position they occupy when the master wheel 18 is in engagement with the wheel 32 of lowest order; that is to say, it is in letter space position marked 1 in Figure 2. An inspection of these figures of drawings will show that each of the cam disks 76 and 77 has for the most part a circular outline or dwell of relatively large radius and another circular outline or dwell of relatively small radius. these two outlines being connected in each instance by inclines 82 and 83. In all of the. Figures 5 to 12, inclusive, each nose 8() is at the foot of one of the inclines 82 of the disk 76, and the nose 81 is at the crest of the incline 83 of the disk 77 so that all of the rockers 47 and 51 are in the position shown in Figure 1 with the Geneva wheels 42 and 43 in engagement with the carrying wheels 32.' At the next step of the carriage, resulting in a partial rotation of the cani shaft in the direction of the arrows. all of these rockers will be rocked to the alternative positions, the noses 8U being forced forward by the inclines 82 up to the large radius of the disk 7G and each nose 81 following down the incline`83 to the low radius of the disk 77. In this position of the parts all of the Geneva wheels will come out of mesh with their respective carrying wheels 32. For the purpose of description, it will be convenient to trace the motions not forwai'd but backward from the position shown in the drawing and said illustrated position is therefore position number 1. If the carriage be stepped backwa rd toward the right one step, thus bringing it to position nuinbei' 2 (that is to say. bringing the. tens wheel into engagement with the master wheel lh) this will result in a` clockwise. rotation of the shaft 75 to the extent of one step. As shown in Figure 5, the incliiies S2 and 83 of the disk 7G come together, forming a mere notch and the incliiies 82 and Sil of the disk 77 come together forming a iiiei'e point, so that one step in the direction referred to will rock the nose tit) toward the front of the machine and lift out the Geneva wheel 43 which connects the units and tens wheels of the totalizci's. Cam number 2 is shown in Figure. (3 where it will be seen that the. inclines 82 and 83 in each disk are separated by one space so that the backward step of the carriage just above described will not affect the rocker 47 for the second space'. This rocker will, however, be operated at the next backward step of the carriage, thus breaking the transfer train between the tens and hundreds wheels as the latter comes into engagement with tlie master wheel. The third cam as shown in Figure 7 has two spaces between'inclines 82 and 81% so that this Geneva wheel will be lifted by the third backward step of the carriage. The cam for the fifth space is shown in Figure S and it has four spaces between the inelines 82 and 83; no rocker 47 or 51 will therefore be operated at the fourth step but this one will be at the. fifth step. The sixth cam shown in Figure 9 has five spaces, the seventh shown in Figure 1() has six spaces, the ninth shown in Figure 11 has eight spaces, and the tenth shown in Figure 12 has nine spaces between the inelines 82 and 83 so that each of the rockers will be operated at the appropriate letter space position of the carriage. At the end of the tenth backward step all of the Genera wheels are out of engagement and remain out of engagement until this totalizer comes back intothe adding column in the leftward travel of the carriage.

It will be observed that as shown in the drawing even the tenth cam shown in Figure 12 still luis a considerable dwell of greater radius in its disc 76 and it will be noted in Figure 4 that the rack 63 has more than ten teeth. It follows that in the rightwai'd motion of the carriage the shaft 75 will continue to rotate for a time after the totalizei has been drawn out of the Comput ing zone. But this does not result in any further actuation of the Geneva rockers. When the gear G5 passes entirely out of engagement with the rack 63 and comes to rest. each nose 8() is just at the top of the incline 82 so that another step of rotation if given to the shaft 75 would restore the parts to the position shown in Figs. 5 to 12. This step, however, is never given, the paits remaining in that final position until in the let'tward travel of the carriage the gear t3?) again runs into mesh with the rack (323 and reverses the sequence of operations above described in detail. This will result in throwing into operative position first Geneva mechanism marked 10, then that marked 9, and so on down to 1.

It is in order to provide for totalizers of ditl'erent widths that the rack 63 is made otl the length shown. The dimensions can ot course be varied but in the present instance shown b v way of illustration the gear (S5 has sixteen teeth and the rack 63 has fouitcen teeth. One tooth of said rack when it first comes into engagement with the gear G5 will turn said gear two teeth before it runs entirely out of engagement. The rack therefore is adapted to give eX- actly a complete rotation to the gear 65 and shaft 75. The totalizer shown in the drawing has ten active spaces and the two sideplates together take `up another letter space so that this totalizer covers eleven letter spaces. It would have ten wheels if all letter spaces were used for computing and none left for punctuation. The maximum size totalizer that can be cared for b the rack G3 would be one of fifteen active letter spaces, the sixteenth step restoring the cam shaft 75 to its normal position which is one step counter-clockwise from the position shown in the drawings. In the present instance in laying off the cams 76-77 a rotation of the shaft 75 is theoretically divided into sixteen steps, of which in the totalizer shown in 'the drawing eleven are used, the remaining five bein represented by the arc of large radius s own in the disk 7 6 in Figure 12. These five steps are. idle but do no harm in this totalizer. If, for example, another totalizer of the same size be set immediately to the right of this one as indicated b broken lines in Figure 4, there will be a time when the gears 65 of both totalizers intermesh with the rack 63; but while the shaft 75 of one of said totalizers is operating the rockers by its cams 76--77 the other shaft 75 will be going through the idle space referred to. It will be seen therefore that the construction lends itself to use with any size totalizer up to a maximum determined by the length of thev rack 63 and the size of the gear 65, in this instance fifteen denominational positions. It will also be seen that totalizers of different sizes can be set side by side and each one will be brought into use at the proper time without any interference by the others In a narrow totalizer a large fraction of the rotation of 'the shaft 75 would be idle. In a totalizer of maximum size there will be but one idle step.

It will be perceived from the above description that when the shaft 75 is standing in Iits normal position lall of the Geneva wheels 42 and 43y are out of engagement with the cari-yin wheels 32. In order to lock the i carr in w eels at this time and in order also to lock all of the carrying wheels at the right of the master wheel, each of the rockers 47 and 51 is made with a locking tooth 84 so dis osed that when the Geneva wheel is rocke out of engagement this locking tooth is rocked into engagement with' that wheel just to the right of the one served by the operated Geneva Wheel. In other words, when for example the carriage steps from the tens to the hundreds osition the rocker lifts out the Geneva whee which connects the tens and hundreds wheel and the tooth 84 locks the tens wheel against rotation. In the leftward travel of the carriage each of these locking teeth is pulled out of` engagement by the same motion that throws the eneva wheel into engagement. These teeth are preferably of V-shape so that they accurately align the carrying wheel.

It will be perceived that the cams which control the denominational devices 47 and 51 have cam portions each of which acts during a letter Space movement of the carriage, the balance of each cam consisting of concentric dwells so that each of the denominational devices is moved by its cam from one of its positions to the other and that the dwell portions of the cam lock the device in each of its two positions. The

Wahl totalizer has in place of these denomi-i national devices certain levers to which the Geneva wheels are pivoted and which are operated by the upstanding arm of the master dog 17 and at the upper front part of the totalizer there is a universal bar or safety-bar which when one of said levers is operated positively locks all of the others against operation. t will be seen that my cams not only relieve the master dog of the work of liftlng 'these levers but they also take the place of the safety-bar inlocking a ainst disturbance all of those levers whose Geneva wheels are in engagement.

In the \Vahl totalizer means are provided to lock the master dog 17 and therefore the keys and the whole computing mechanism against operation at certain points of carriage travel, notably at punctuation spaces such as the spaces'marked 4 and 8 in the resent case. Various means can be provided to lock the machine at these oints when my totalizer is used but I pre er to provide for this purpose a special cam which in the drawing is marked P, this being the third double cam from the right. Its outline is shown in Fig. 13, where it will be seen that the right-hand disk 76 is made with two notches 85, one for the fourth and one for the eighth space, and the left-hand disk 77 is made with two projections or teeth 86 corresponding to the same spaces. This camcontrols a follower lever 87 having two teeth 80 and 81, the same as the other follower levers. The other arm of this lever, however, has not the same outline as the other follower levers as will be apparent from Figure 1 where its shape can be easil traced although much of it is shown in broken lines. It will be seen that this lever is pivoted on the forward rod 53 and that. it has an arm extending rearward and terminating a little in front of the cross bar 60 hereinbefore referred to. During the greater part of the travel of the carriage through a computing zone this arm stands in the elevated position shown in Figure 1 but at the fourth'and eighth spaces it is depressed as will be apparent from a consider- A ation of Figure 13. When it is in its depressed position it serves to lock a device which in those positions of the carriage stands in front of the master dog 17 and thus prevents the operation of said dog.

Abail bar 90 has arms 91 and 92 mounted kon and preferably fast on a rock shaft 93,

this bail being perhaps best shown in Figure 14. Its rocking motion is influenced by y any suitable spring 94, the one shown being it will continue to operate unless distur shown it is perforated so that the shaft 93 passes through it and it is riveted at 97 to the cross bar of the bail. The bar 90 travels in front of the master dog 17 in such position that the entire bail frame is rocked at every operation of said dog but thearm 96 is so disposed that whenever the locking lever 87 is operated by its cam said locking lever blocks the operation of the bail and prevents operation of the master dog.

I prefer to prolong the right-hand arm 91 of the bail frame and provide it with a tooth 98 which normally enters between two of the teeth of the carrying wheel 32 of,l

lowest order and it is this tooth engaging said wheel that limits the n iotion of the bail frame under the tension of the spring 94. This tooth 98 is not really necessary in the machine because at all times when the righthand wheel 32 is out of engagement with the master wheel 18 said wheel is locked by the locking tooth 84. The tooth 98 is however as handy a device as any for limiting the motion of the bail and it is of a certain amount of convenience to the assemblers and i-epairinen who when they have kassembled one of these totalizers are accustomed to spin the wheels around in order to test the action of the mechanism. This they can conveniently do by turning the gear to the position shown in Figure l and then whenever it is desired to turn the righthand wheel 32 the bail 9() can be operated with the finger and the wheels can be locked again b merely releasing said bail.

The gail 90 offers no substantial resistance to the o eration of the master dog because its motion is an entirely idle one, and the spring 94 can be made quite light.

In order that the cam mechanism hereinbefore described shall operate correctly, it is essential that the gear or pinion 65 stand normally in the right position which is one tooth space away from the position shown in Figs. 1 and 4. Any suitable means can be provided for insuring this correct sitioning of the gear 65 and of the cam s aft. In practice, mechanical means would be provided for this purpose but in the resent instance I have merely shown a smal sighto ning 100, Fig. 4, which stands over one o the teeth of the gear 73. The gear tooth which in Fig. l is marked 101 is the one that should normally stand under this sightopening. The edge of said gear tooth ma be marked in any suitable way so that the operator can look through the sight-opening and if necessary spin the pinion 65 with his finger until the right tooth comes into sition. Once this gear is started off ri *lit d by some accident or misoperation.

Various changes may be made in the details of construction and arrangement Without departing from my invention.

`What I claim as new and desire to secure by Letters Patent is l.'I In a computing machine, the combination with register wheels, means for actuating said wheels one at a time to add the digits of a number, and a traveling carriage; of a series of denominational devices one for actuation preliminary to the operation of each register wheel, a cam shaft having thereon cams spirally arranged for actuating said devices one at a time, a rack bar and pinion brought into co-operation by the travel of said carriage and said pinion driving said cam shaft, each of said denominational devices having mounted thereon a transfer device for transferring the tens from one denomination to the next higher and a locking device for locking the wheel of lower denomination, said transfer device and said locking device engaging the lower wheel alternately.

2. In a computing machine, the combination with register whtels, means for actuating said wheels one at a time to add the digits of a number, and a traveling carriage; of a series of denominational devices one for actuation preliminary to the operation of each register wheel, a cam shaft having thereon, cams spirally arranged for actuating said devices one at a time, a rack bar and pinion brought into cooperation by the travel of said carriage and said pinion driving said cam shaft, each of said denominational devices having mounted thereon a transfer device for transferring the tens from one denomination to the next higher, and a locking device for locking the wheel of lower denomination, said transfer device and said locking device engaging the lower wheel alternately and said cams each having a part to engage its denominational device when the carriage moves out of an adding zone and adapted to throw in all of said locking devices when the carriage passes out of an adding zone.

3. In a combined typewriting and computing machine, the combination with a stationary part and a traveling carriage having a travel equal to the width of a plurality of computing zones; of one or more totalizers on one of saidl traveling arts, each totalizer having a pinion, a rack bar on the other of said parts for engagement by said pinions whereby the pinions are y turned each when passing the rack bar, each totalizer having therein a cam shaft driven by its pinion and divided into a number of spaces of movement equal to the number of letter spaces in a totalizer of maximum size and said rack being of a length adapted toa totalizer of maximum size, denominational devices in each totalizer and spirally disposed cams on said shaft, any totalizer of a width less than the maximum having dwell portions on its cam disks for those steps of carriage travel and turning of said cam disks during which said totalizer is outside of a computing zone.

4. In a combined typewriting and com-- puting machine, the combination with a stationary framework, a traveling totalizer truck, one or more totalizers mounted on said truck, and actuating means for said totalizers including a master wheel to engage the register wheels of said totalizers one at a time as each totalizer travels through a computing'zone; of a stationary rack of a length adapted to a totalizer of maximum width, each totalizer having therein a pinion for engagement with said rack during that part of the carriage travel when the carriage is passing the rack, a cam shaft driven by said pinion and having thereon a series of denominational cams, a series of denominational devices in the totalizer operated one at a time by said cams, said cams being spirally arranged and having operative parts and dwell parts, each cam having therein a dwell part corresponding to the whole travel of the carriage except that part Where that particular denomination is in use and including in the case of a narrow totalizer a part of the carriage travel during which that totalizer is outside of the computing zone.

5. In a computing machine, the combination With register wheels and means for actuating them one at a time, of transfer mechalnism including Geneva Wheels, denominational levers on which said Geneva Wheels are mounted, a series of cams having their operating parts spirally arranged so as to operate said levers one at a time, springs acting to turn said levers so as to ress said Geneva wheels toward said carrying wheels, adjustable stops'for limiting the motion of said levers under the tension of said springs so that the relation of each Geneva wheel to its carrying wheel can have a fine adjustment and said cams including inclined parts to positively move the Geneva Wheels away from their carrying Wheels and also to positively move said Geneva Wheels towards their carrying wheels, and each of the cams having a dwell part serving to lock the Geneva wheel in engagement with its carrying wheelduring the time when the carrying wheels of lower order are beingactuated.

6. In a computing machine, the combination with carrying Wheels and a master Wheel for actuating said carrying wheels one at a time, of transfer mechanism including Geneva wheels, levers on which said Geneva wheels are mounted for motion toward and from said carrying wheels, and a series of spirally disposed cams for operating said levers, said cams having dwells to hold their respective levers positively in each of their two positions and operating inclines for moving the levers from one position to the other so that said cams not only act to move the Geneva wheels into and out ot' engagement but also act to lock them both in and out of engagement.

7. In a computing machinethe combination with carrying wheels and a master wheel for actuating said carrying wheels one at a time, of transfer mechanism including Geneva wheels, levers on which said Geneva wheels are mounted for motion toward and from said carrying wheels, and a series of spirally disposed cams for operating said levers, said cams having dwells to hold their respective levers positively in each of their two positions and operating inclines for moving' the levers from one position to the other so that said cams not only act to move the Geneva Wheels into and out of engagement but also act to lock them both in and out of engagement, and each of said denominational levers vhaving a locking tooth to engage the Wheel of lower order when the Geneva wheel is out of engagement.

8. In a computing machine, the combination with carrying Wheels and a master vwheel for actuating said carrying Wheels one at a time, of transfer mechanism including Geneva wheels, levers on which said Geneva wheels are mounted for motion toward and from said carrying Wheels, and a series of spirally disposed cams for operating said levers, said cams having dwells to 4 hold their respective levers positively in each of their two positions and operating incllnes for moving the levers from one `position to the other so that said cams not only act to move the Geneva wheels intov and out of engagement but also act to lock them both in and out of engagement and each of said denominational levers having a locking tooth to engage the wheel of lower order, and the construction of said cams being such that while a totalizer is in* the computing zone all of those denominational levers to the right of the master wheel have their locking teeth in engagement with the carrying wheels and all those at the left of said master wheel have their lGeneva pinionsin engagement and all of the cams being so constructed that when'the totalizer moves out ofthe com uting zone toward the ieft all of the locking teeth are thrown into engagement.

9. In a computing machine, the combination with registering mechanism including register wheels, and means for operating said wheels one at a time, said wheels havingY spaces between them for punctuation of denominational devices one for actuation preliminary to the operation of each register wheel, spirally disposed cams for operating said devices, a bar adapted to be actuated at each operation of a register wheel, a

lock yfor said bar, and a cam included in said series of cams for operating said lock at said punctuation spaces;

10. In a combined typewriting and computing machine, the combination with a traveling carriage, a totalizer including register wheels, and actuating mechanism including a master wheel and a master dog; of transfer mechanism including transfer devices adapted to be moved toward and from said register wheels one at a time, a series of spirally dis sed cams for so moving said transfer evices, a bar in the totalizer adapted to be operated by said master dog at each actuation thereof, a lock for said bar, and a cam for operatin said lock at predetermined positions o said traveling carriage.

l1. In a computing machine, the combination with register wheels, of transfer pinions, levers on which said pinions are mounted, said levers having locking teeth for engagement with said wheels alternately with said pinions, and cams for operatin said levers one after another.

Sign at the borough of Manhattan, cit of New Yorkin the count of New Yor and State of New York, t is 24th day of March, A. D. 1924.

ARTHUR F. POOLE. 

